主页 电源管理 监控器和复位 IC 复位及看门狗 IC

TPS3838

正在供货

具有手动复位功能的低电平有效、漏极开路、毫微功耗监控器

产品详情

Rating Catalog Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 1.71, 2.25, 2.64, 2.93 Features Manual reset capable, Reset time delay, Undervoltage monitor only Reset threshold accuracy (%) 1.75 Iq (typ) (mA) 0.00022 Output driver type/reset output Active-low, Open-drain Time delay (ms) 10, 200 Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 85
Rating Catalog Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 1.71, 2.25, 2.64, 2.93 Features Manual reset capable, Reset time delay, Undervoltage monitor only Reset threshold accuracy (%) 1.75 Iq (typ) (mA) 0.00022 Output driver type/reset output Active-low, Open-drain Time delay (ms) 10, 200 Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 85
WSON (DRV) 6 4 mm² (2 mm × 2 mm) SOT-23 (DBV) 5 8.12 mm² (2.9 mm × 2.8 mm)
  • Supply current: 220 nA (typical)
  • Precision supply voltage supervision range:
    1.8 V, 2.5 V, 3.0 V, and 3.3 V
  • Power-on reset generator with selectable delay time: 10 ms or 200 ms
  • Push and pull RESET output (TPS3836),
    Push and pull RESET output (TPS3837), or open-drain RESET output (TPS3838)
  • Manual reset
  • 5-pin SOT23 and 2-mm × 2-mm, 6-pin SON packages
  • Temperature range: –40°C to 85°C
  • Supply current: 220 nA (typical)
  • Precision supply voltage supervision range:
    1.8 V, 2.5 V, 3.0 V, and 3.3 V
  • Power-on reset generator with selectable delay time: 10 ms or 200 ms
  • Push and pull RESET output (TPS3836),
    Push and pull RESET output (TPS3837), or open-drain RESET output (TPS3838)
  • Manual reset
  • 5-pin SOT23 and 2-mm × 2-mm, 6-pin SON packages
  • Temperature range: –40°C to 85°C

The TPS3836, TPS3837, and TPS3838 device families of supervisory circuits provide circuit initialization and timing supervision, primarily for digital signal processors (DSP) and processor-based systems.

During power-on, RESET is asserted when the supply voltage VDD becomes higher than 1.1 V. Thereafter, the supervisory circuit monitors VDD and keeps the RESET output active as long as VDD remains below the threshold voltage of VIT. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time starts after VDD rises above the threshold voltage VIT.

When CT is connected to GND, a fixed delay time of typically 10 ms is asserted. When connected to VDD, the delay time is typically 200 ms. When the supply voltage drops below the threshold voltage VIT, the output becomes active (low) again. All the devices of this family have a fixed-sense threshold voltage (VIT) set by an internal voltage divider.

The TPS3836 has an active-low, push-pull RESET output. The TPS3837 has an active-high, push-pull RESET, and the TPS3838 integrates an active-low, open-drain RESET output. The product spectrum is designed for supply voltages of 1.8 V, 2.5 V, 3.0 V, and 3.3 V. The circuits are available in either a SOT23-5 or a 2-mm × 2-mm SON-6 package. The TPS3836, TPS3837, and TPS3838 families are characterized for operation over a temperature range of –40°C to 85°C.

The TPS3836, TPS3837, and TPS3838 device families of supervisory circuits provide circuit initialization and timing supervision, primarily for digital signal processors (DSP) and processor-based systems.

During power-on, RESET is asserted when the supply voltage VDD becomes higher than 1.1 V. Thereafter, the supervisory circuit monitors VDD and keeps the RESET output active as long as VDD remains below the threshold voltage of VIT. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time starts after VDD rises above the threshold voltage VIT.

When CT is connected to GND, a fixed delay time of typically 10 ms is asserted. When connected to VDD, the delay time is typically 200 ms. When the supply voltage drops below the threshold voltage VIT, the output becomes active (low) again. All the devices of this family have a fixed-sense threshold voltage (VIT) set by an internal voltage divider.

The TPS3836 has an active-low, push-pull RESET output. The TPS3837 has an active-high, push-pull RESET, and the TPS3838 integrates an active-low, open-drain RESET output. The product spectrum is designed for supply voltages of 1.8 V, 2.5 V, 3.0 V, and 3.3 V. The circuits are available in either a SOT23-5 or a 2-mm × 2-mm SON-6 package. The TPS3836, TPS3837, and TPS3838 families are characterized for operation over a temperature range of –40°C to 85°C.

下载 观看带字幕的视频 视频

您可能感兴趣的相似产品

open-in-new 比较替代产品
功能与比较器件相同但引脚有所不同。
TPS3840 正在供货 具有手动复位和可编程复位时间延迟功能的毫微功耗高输入电压监控器 TPS3840 offers more threshold voltage options (1.6 V to 4.9 V) with low 0.3-uA quiescent current and more accurate reset threshold.

技术文档

未找到结果。请清除搜索并重试。
查看全部 11
顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 TPS383x Nano Power Voltage Supervisor With Selectable Reset Delay 数据表 (Rev. F) PDF | HTML 2019-9-11
选择指南 Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) 2020-2-28
电子书 电压监测仪和电压检测器:提示、技巧和基础知识 英语版 2019-8-28
用户指南 DLPC350 Programmer’s Guide (Rev. G) 2018-7-5
设计指南 TIDA-00570 Test Results (Rev. A) 2017-8-1
用户指南 TIDA-00254 User's Guide (Rev. B) 2017-7-26
测试报告 TIDA-00254 Test Results (Rev. A) 2016-4-21
产品概述 TI DLP® Technology for 3D Machine Vision (Rev. C) 2016-4-8
更多文献资料 点云生成和 3D 机器视觉参考设计 英语版 2014-9-12
测试报告 DLP4500-C350REF Test Results 2013-9-12
应用手册 Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs 2011-9-19

设计与开发

如需其他信息或资源,请点击以下任一标题进入详情页面查看(如有)。

支持软件

TIDC535 — TIDA-00254 Windows Installer

支持的产品和硬件
参考设计

DLP4500-C350REF — 采用 DLP 技术的高分辨率、便携式光导参考设计

此参考设计采用 DLP® 0.45” WXGA 芯片组并在 DLP® LightCrafter™ 4500 评估模块 (EVM) 中实现,可灵活控制适用于工业、医疗和科学应用的高分辨率精确模式。借助基于 USB 的免费 GUI 和 API,开发人员可轻松将 TI 创新的数字微镜器件 (DMD) 技术与摄像头、传感器、电机和其他外设相集成,以打造高度差异化的 3D 机器视觉系统、3D 打印机和扩增实境显示器。

 



 

 

支持的产品和硬件
参考设计

TIDA-00254 — 使用 DLP® 技术为 3D 机器视觉应用生成精确点云

3D 机器视觉参考设计针对 LightCrafter™ 系列控制器采用德州仪器 (TI) DLP® 先进光控制软件开发套件 (SDK),让开发人员可以通过将 TI 的数字微镜器件 (DMD) 技术与摄像头、传感器、电机或其他外设集成来轻松构建 3D 点云。与众不同的 3D 机器视觉系统采用 DLP® LightCrafter™ 4500 评估模块 (EVM),采用 DLP4500 WXGA 芯片组,可灵活控制高分辨率、精确图案,适用于工业、医疗和安全应用。

支持的产品和硬件
参考设计

TIDA-00570 — 用于工业 3D 打印和数字光刻的高速 DLP 子系统参考设计

高速 DLP® 子系统参考设计为需要高分辨率、出色速度和生产可靠性的工业数字光刻和 3D 打印应用提供系统级 DLP 开发板设计。该系统设计通过集成超高分辨率 DLP 数字微镜器件 DLP9000X 和超快速度数字控制器 DLPC910 更大限度提高吞吐量。该组合具有超过 400 万个微镜(WQXGA 分辨率),因此能够实现超过 60 千兆位/秒 (Gbps) 的连续流数据速率。DLPC910 数字控制器除了全帧输入外,还为设计人员提供了高级像素控制功能,可实现随机行寻址。更高的灵活性支持多样化架构,适用于工业、医疗、安全、电信和仪表等应用。

支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
WSON (DRV) 6 Ultra Librarian
SOT-23 (DBV) 5 Ultra Librarian

订购和质量

支持和培训

可获得 TI 工程师技术支持的 TI E2E™ 论坛

所有内容均由 TI 和社区贡献者按“原样”提供,并不构成 TI 规范。请参阅使用条款

如果您对质量、包装或订购 TI 产品有疑问,请参阅 TI 支持。​​​​​​​​​​​​​​

视频